D99 Enable compiler caches

Jenkinsfile

@@ -1,5 +1,19 @@
 import org.jenkinsci.plugins.workflow.steps.FlowInterruptedException
 
+regexDevBranch = /develop\/\d+\.\d+\.\d+/
+regexReleaseBranch = /release\/\d+\.\d+/
+regexNocacheBranch = /nocache\/.+/
+regexRecacheBranches = [regexDevBranch, regexReleaseBranch]
+
+if (env.BRANCH_NAME && regexRecacheBranches.any{ env.BRANCH_NAME ==~ it }) {
+    env.CCACHE_RECACHE = 1
+    env.CLCACHE_RECACHE = 1
+}
+if (env.BRANCH_NAME && env.BRANCH_NAME ==~ regexNocacheBranch) {
+    env.CCACHE_DISABLE = 1
+    env.CLCACHE_DISABLE = 1
+}
+
 abortPreviousRunningBuilds()
 
 def builders = [:]
@@ -147,7 +161,9 @@ builders['Build swift Win32'] = {
             throw error
         } finally {
             notifyDiscord('Win32', buildResults['swift-win32'])
-            killDBusDaemon()
+            killWindowsProcess('dbus-daemon.exe')
+            killWindowsProcess('clcache.exe')
+            killWindowsProcess('python.exe')
             cleanWs deleteDirs: true, notFailBuild: true
         }
     }
@@ -192,7 +208,9 @@ builders['Build swift Win64'] = {
             throw error
         } finally {
             notifyDiscord('Win64', buildResults['swift-win64'])
-            killDBusDaemon()
+            killWindowsProcess('dbus-daemon.exe')
+            killWindowsProcess('clcache.exe')
+            killWindowsProcess('python.exe')
             cleanWs deleteDirs: true, notFailBuild: true
         }
     }
@@ -250,7 +268,6 @@ node('master') {
 
 node('master') {
     try {
-        def regexDevBranch = /develop\/\d+\.\d+\.\d+/
         if (env.BRANCH_NAME && env.BRANCH_NAME ==~ regexDevBranch) {
             stage('Publish') {
                 unstash name: 'swift-linux-64'
@@ -384,8 +401,6 @@ def notifyDiscord(nodeName, buildStatus = 'UNSTABLE') {
 }
 
 def getEolInMonth() {
-    def regexDevBranch = /develop\/\d+\.\d+\.\d+/
-    def regexReleaseBranch = /release\/\d+\.\d+/
     if (env.BRANCH_NAME && env.BRANCH_NAME ==~ regexDevBranch) {
         // 6 month for dev builds
         return 6
@@ -410,10 +425,10 @@ def shouldUploadSymbols() {
     }
 }
 
-def killDBusDaemon() {
+def killWindowsProcess(name) {
-    bat '''
+    bat """
-        tasklist /FI "IMAGENAME eq dbus-daemon.exe" 2>NUL | find /I /N "dbus-daemon.exe">NUL
+        tasklist /FI "IMAGENAME eq ${name}" 2>NUL | find /I /N "${name}">NUL
-        if "%ERRORLEVEL%"=="0" taskkill /f /im dbus-daemon.exe
+        if "%ERRORLEVEL%"=="0" taskkill /f /im ${name}
         EXIT 0
-    '''
+    """
 }

mkspecs/features/common_pre.prf

@@ -53,6 +53,17 @@ include(wordsize.pri)
 
 contains(TEMPLATE, "vc.*"): QMAKE_CXXFLAGS *= /MP
 
+################################
+# Cache intermediate files to improve build times
+################################
+
+swiftConfig(ccache) {
+    swiftConfig(profileRelease):error(profileRelease is incompatible with clcache)
+    msvc:       QMAKE_CXX = clcache
+    else:macx:  QMAKE_CXX = /usr/local/bin/ccache $$QMAKE_CXX
+    else:gcc:   QMAKE_CXX = ccache $$QMAKE_CXX
+}
+
 ################################
 # Release build with debug info
 ################################

scripts/jenkins.py

@@ -37,6 +37,7 @@ class Builder:
         """
         print('Preparing environment ...')
         os.environ['PATH'] += os.pathsep + self._get_qt_binary_path()
+        self._ccache_prepare()
         self._specific_prepare()
 
         print('Updating from datastore ...')
@@ -46,6 +47,15 @@ class Builder:
         shared_path = os.path.abspath(os.path.join(source_path, 'resources', 'share'))
         datastore.update_shared(host, datastore_version, shared_path)
 
+    def _ccache_prepare(self):
+        os.environ['CCACHE_NODIRECT'] = '1'
+        os.environ['CLCACHE_NODIRECT'] = '1'
+        os.environ['CLCACHE_COMPRESS'] = '1'
+        os.environ['CLCACHE_OBJECT_CACHE_TIMEOUT_MS'] = str(10 * 60 * 1000)
+        os.environ['CLCACHE_DIR'] = 'C:\\clcache' # workaround https://github.com/frerich/clcache/issues/342
+        os.environ['CLCACHE_BASEDIR'] = os.environ['WORKSPACE']
+        os.environ['CCACHE_BASEDIR'] = os.environ['WORKSPACE']
+
     def build(self, jobs, qmake_args, dev_build, eolInMonth):
         """
         Run the build itself. Pass dev_build=True to enable a dev build
@@ -69,6 +79,7 @@ class Builder:
             print('Setting EOL date to ' + eolDate.strftime('%Y%m%d'))
             qmake_call += ['SWIFT_CONFIG.endOfLife=' + eolDate.strftime('%Y%m%d')]
 
+        qmake_call += ['SWIFT_CONFIG.ccache=true']
         qmake_call += ['-r', os.pardir]
         subprocess.check_call(qmake_call, env=dict(os.environ))
 

src/blackcore/blackcore.pro

@@ -16,6 +16,7 @@ INCLUDEPATH += ..
 DEPENDPATH += . ..
 
 PRECOMPILED_HEADER = pch/pch.h
+INCLUDEPATH += pch
 
 DEFINES += LOG_IN_FILE BUILD_BLACKCORE_LIB
 

src/blackgui/blackgui.pro

@@ -28,6 +28,7 @@ else {
 DEPENDPATH += . ..
 
 PRECOMPILED_HEADER = pch/pch.h
+INCLUDEPATH += pch
 
 DEFINES += LOG_IN_FILE BUILD_BLACKGUI_LIB QWT_DLL
 

src/blackmisc/blackmisc.pro

@@ -14,6 +14,7 @@ INCLUDEPATH += ..
 # DEPENDPATH += . .. // BlackMisc should be independent
 
 PRECOMPILED_HEADER = pch/pch.h
+INCLUDEPATH += pch
 
 DEFINES += LOG_IN_FILE BUILD_BLACKMISC_LIB
 RESOURCES += blackmisc.qrc